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CVE-2022-23002— Point Compression/Decompression of NIST P-256 points with X coordinate of zero

Quick assessment

Affected
Western Digital Sweet B Library
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Western Digital Sweet B是美国Western Digital公司的一个使用 NIST P-256 和 SECG secp256k1 曲线实现公钥椭圆曲线加密 (ECC) 的库。 Western Digital Sweet B library存在安全漏洞，攻击者利用该漏洞在使用该库的应用程序中造成错误场景，从而对单个用户造成有限的拒绝服务。

CVSS 5.3 · Medium EPSS 0.70% · P51

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2022-23002

Vulnerability Information
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Vulnerability Title
Point Compression/Decompression of NIST P-256 points with X coordinate of zero
Source: CVE Program / CVE List V5
Vulnerability Description
When compressing or decompressing a point on the NIST P-256 elliptic curve with an X coordinate of zero, the resulting output is not properly reduced modulo the P-256 field prime and is invalid. The resulting output will cause an error when used in other operations. This may be leveraged by an attacker to cause an error scenario in applications which use the library, resulting in a limited denial of service for an individual user. The scope of impact cannot extend to other components.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对异常条件检查或处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Western Digital Sweet B 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Western Digital Sweet B是美国Western Digital公司的一个使用 NIST P-256 和 SECG secp256k1 曲线实现公钥椭圆曲线加密 (ECC) 的库。 Western Digital Sweet B library存在安全漏洞，攻击者利用该漏洞在使用该库的应用程序中造成错误场景，从而对单个用户造成有限的拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Western Digital Sweet B Library Sweet B Library ~ v2 -

II. Public POCs for CVE-2022-23002

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III. Intelligence Information for CVE-2022-23002

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Other References for CVE-2022-23002 (1)

Same Patch Batch · Western Digital · 2022-07-29 · 4 CVEs total

CVE-2022-23001 5.3 MEDIUM Sweet-B Library: Point compress/decompress using the wrong bit for sign
CVE-2022-23003 5.3 MEDIUM Shared secret or Point multiplication of NIST P-256 points with X coordinate of zero
CVE-2022-23004 5.3 MEDIUM Algorithm incorrectly returning error and Invalid unreduced value written to output buffer

IV. Related Vulnerabilities

Same product: Sweet B Library
Same vendor: Western Digital
Same weakness: CWE-703

V. Comments for CVE-2022-23002

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